2015
DOI: 10.1209/0295-5075/112/67001
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Fermi liquid behaviour in weakly disordered metals close to a quantum critical point

Abstract: We calculate analytically the low temperature quasi-particle scattering rate, the conductivity, and the specific heat in weakly disordered metals close to a quantum critical point, via the use of a proper fluctuation potential V (q, ω) between the quasi-particles. We obtain typical Fermi liquid results proportional to T 2 and T respectively, with prefactors which diverge as power laws of the control parameter a upon approaching the critical point. The Kadowaki-Woods ratio is shown to be independent of a (possi… Show more

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Cited by 1 publication
(11 citation statements)
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“…For the purpose of our calculations, we will treat ξ and a as independent parameters. This procedure, also followed in 12 , is entirely consistent, as can be seen from the details of the calculations below. Also, after eq.…”
Section: The Modelmentioning
confidence: 72%
See 4 more Smart Citations
“…For the purpose of our calculations, we will treat ξ and a as independent parameters. This procedure, also followed in 12 , is entirely consistent, as can be seen from the details of the calculations below. Also, after eq.…”
Section: The Modelmentioning
confidence: 72%
“…It is possible that in this regime T is less or at most of the order of the impurity scattering rate τ −1 o . We have shown in 12 , via analytic diagrammatic calculations, that this critical FL behaviour can be consistently understood as arising from the exchange of relevant ferromagnetic fluctuations with small momentum q among the quasi-particles. Our approach assumes that we deal with weakly disordered metallic systems.…”
Section: Introductionmentioning
confidence: 90%
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